Growth of gold nanoparticles at gelatin-silica bio-interfaces | Zendy

Imen Bensaid | Zendy; Sylvie Masse | Zendy; Mohamed Selmane | Zendy; S. Fessi | Zendy; Thibaud Coradin | Zendy

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Growth of gold nanoparticles at gelatin-silica bio-interfaces

Author(s) -

Imen Bensaid,

Sylvie Masse,

Mohamed Selmane,

S. Fessi,

Thibaud Coradin

Publication year - 2015

Publication title -

apl materials

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.571

H-Index - 60

ISSN - 2166-532X

DOI - 10.1063/1.4935309

Subject(s) - gelatin , materials science , nanoparticle , colloidal gold , colloid , crystallization , nanotechnology , chemical engineering , silicate , chemistry , organic chemistry , engineering

International audienceThe growth of gold nanoparticles via chemical reduction of HAuCl4 dispersed in gelatin-silicate mixtures was studied. Gelatin leads to densely packed nanoparticles whereas open colloidal aggregates with tight boundaries are formed within silica. Within the bio-hybrid systems, gold species are located within the gelatin-silicate particles and/or within the gelatin phase, depending on the preparation conditions. These various localizations and their impact on the final nanoparticle structure are discussed considering attractive and repulsive electrostatic interactions existing between the three components. These data suggest that bio-hybrid systems are interesting and versatile interfaces to study crystallization processes in confined environments

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